wielgolaski



. F. H. A. WIELGOLASKI. METHQD 'AND APPARATUS FOR STRETCHING OUT LONG DOUBLE OR MULTIPLE ELECTRIC ARCS.

APPLICATION FILED SEPT. 28.1916.

Patented Nov. 4, 1919.

2 SHEETSSHEET 1.

Inventor; F HA. ielg mlaski Attorney F. H. A. WIELGOLASKI.

METHOD AND APPARATUS FOR STRETCHING OUT LONG DOUBLE 0R MULTIPLE ELECTRIC ARCS.

APPLICATION FILED SEPT. 28. 1916.

1,320,431 Patented Nov. 4, 1919. I

2 SHEETSSHEET 2.

Invantur:

EHflWialg n10. ski.

Attmrney UNITED STATES PATENT GFFICE.

FRANS HEN RIK AUBERT WIELGOLASKI, F CI-TB'ISTIANIA, NORWAY.

METHOD AND APPARATUS FOR STRETCHING- OUT LONG DOUBLE OR MULTIPLE ELECTRIC ARCS.

Specification of Letters Patent. Patented NOV. 4, 1919.

Application filed September 28, 1916. Serial No. 122,625.

. 0 all whom it may concern:

Be it known that I, FRANS HENRIK iUBERT. Vncnoomsm, of Odins gate 1, Ihristian'ia, in the Kingdom of Norway, raving invented certain new and useful Imirovements in Methods and Apparatus for Stretching ()ut Long Double or Multiple Electric Arcs, do hereby declare that the ollowing is a full, clear, and exact descripion of the same.

It is already known that long single elecric arcs may be stretched out or extended n this manner, that the first part of the tretching-out takes place along socalled torn-shaped electrodes, whereas the coninued stretching-out takes place by each nd of the are being driven into its separate urnace space by means of a gas current (see plicants Patent No. (U. S.) 1,061,892 Canada) 151774).

The present invention comprises a somevhat similar method of stretching out .ouble or multiple electric arcs, but this iethod is characterized by this that the rcafter having first been somewhat tretched out along horn-shaped electrodes-- hung with its ends upon'the outer ends f these horn-shaped electrodes and is therefter divided, the stretching-out being then ontinued in each portion of the arc, the ends fsuch portions by the said portions each eing blown into its furnacev space by means 7 f a blast of gas or air.

The invention is illustrated in the accomanying drawing, in which:

Figures 1 and 2 show in longitudinal eleation and in section respectively an eX- mple of a suitable arrangement for carryag out the method by a single-phase alterating current and by direct current.

Figs. 3 and 4 show in longitudinal elevaion and in section respectively an example f a similar arrangement operating by threehase alternating current.

Figs. 5, 6, 7 and 8 show in sections how he electrically conducting walls of the furace space may be built up and how the furac'e. spaces may if desired (as shown in igs. 7 and 8) be connected together through lots for equalizing the gas pressure throughut the system.

Fig. 9 shows an arrangement of appaatus for using horn-shaped electrodes with ring-shaped electrodes at the tops thereof, or optionally rotating electrodes.

Figs. 10 and 11 show different kinds of tubes that may be employed, these being shown in cross-section.

Referring to Figs. 1 and 2 the reference numerals 12 and 34 represent hornshaped electrodes, between which the arc is started and extended in the manner which is characteristic and known for such electrodes, until the arc burns between the ends 2- and 4 of the horn-shaped electrodes. In this position the are, on account of its always upwardly curved shape, will strike against the adjacent edges 7- of the electrically conducting and mutually electrically connected furnace pipes 5.-6 and 78, whereby the are, as indicated diagrammatically in the drawing, is divided into two separate series-connected arcs, the

new-formed ends of which are each, by

means of its separate gas current, driven up into its separate furnace space 56 and.

7-8 respectively as indicated bythe arrows. An electrical connection between the two furnace parts is designated by the rod or wire 9 or 9 respectively. This connection obviously may be arranged in any other suitable manner. Thus the furnace ipes ma be made in an integral piece as s own in; igs. 5 and 7. The furnace spaces may be electrically conducting throughout or be provided with separate electric conductors.

In the same manner the stretching-out takes place in a three-phase arrangement,

which is shown in Figs. 3, 4;, 6 and 8. A detailed explanation of these figures is unnecessary. However, it should be mentioned,

that it may be advantageous, especially in .provided with other auxiliaiy,means for starting than those mentioned above.

As shown in Fig. 9, tlie'horn-shaped electrodes may also be completely or partly replaced by rotating electrodes. (see-, appl i ,v

cants (U. S. A.) pate "application No. 78%27}. The ends of the horn-shaped electrodes may also be made ring-shaped, so

that the arc end maybeqalloived, to rotate upon this ring-shape. 'l he'foi'rms of apparatuses here mentioned may further be provided with suitable resistance deyices.

In Fig. 9, 12 is an annular end of the hornshapcd electrode. 13 is'a rotating electrode, \vh ich partly can be substituted for the other horn-shaped electrode. 3 If the last men tioned horn-shaped electrode is entirely replaced (substituted) by a rotating electrode, the diameter of this must be greater as shown in dotted lines at 11.

110 shows in clotted lines how also the first mentioned horn-shaped electrode partly may be substituted by a rotating electrode. The one furnace pipe 56 is here shown undivi ed, Whereas the other furnace pipe divided into sections 16, 1'? and 18 which are mutually connected through the resistance 19. 14 and15 are similar resistaiuwhich connect the individual parts 20 and 21 of the horn-shaped electrode at the base of the pipe 78 with each other. l213 indicate the source of electricity. 5) is the electrical conducting connection between the two furnace pipes.

Fig. 10 shows a section of an all metal pipe which can be used in any of the above constructions. Fig. 11 shows a pipe made principally of nonconducting material 27 having electrically conductive insets or slabs 28 set into its interior, to serve as conductors.

Having now described my invention, What I claim as new and desire to secure by Letters Patent is:

1. A method of stretching out long double or multiple electric arcs, which comprises producing an arc between-electrodes, blo\v ing portions of said arc into each of a plurality of separate tubular furnaces, the Walls of which are in electrical connection with each other.

2. An electric furnace arrangement comprising a plurality of furnace pipes in combination with one set of electrodes arranged at one end of said pipes, said pipes being constructed, at least in part, of electrically conductive material, and said pipes being in electrical connection with each other.

3. An electric furnace arrangement comprising not less than three furnace pipes in combination with one set of horn-shaped electrodes arranged at one end of said set of pipes, said pipes being constructed, at least in part, of electrically conductive material, and said pipes being in electrical connection with one another.

4. In the arrangements of apparatus specified in claims 2 and 3, the construction of the pipes partially, but not entirely of electrically conductive material.

In testimony whereof I have signed my name to this specification in the presence of tWO subscribing witnesses.

FRANS HENRIK AUBERT WIELGOLASKI.

Witnesses AXEL LAI-IN', MoeENs BIRGGE. 

